// Emacs style mode select   -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// DESCRIPTION:
//      Rendering of moving objects, sprites.
//
//-----------------------------------------------------------------------------

#ifndef __R_THINGS__
#define __R_THINGS__

#define MAXVISSPRITES   128

extern vissprite_t      vissprites[MAXVISSPRITES];
extern vissprite_t*     vissprite_p;
extern vissprite_t      vsprsortedhead;

// Constant arrays used for psprite clipping
//  and initializing clipping.
extern short            negonearray[SCREENWIDTH];
extern short            screenheightarray[SCREENWIDTH];

// vars for R_DrawMaskedColumn
extern short*           mfloorclip;
extern short*           mceilingclip;
extern fixed_t          spryscale;
extern fixed_t          sprtopscreen;

extern fixed_t          pspritescale;
extern fixed_t          pspriteiscale;

void R_DrawMaskedColumn (column_t* column);

void R_SortVisSprites (void);

void R_AddSprites (sector_t* sec);
void R_AddPSprites (void);
void R_DrawSprites (void);
void R_InitSprites (char** namelist);
void R_ClearSprites (void);
void R_DrawMasked (void);

void
R_ClipVisSprite
( vissprite_t*          vis,
  int                   xl,
  int                   xh );

#endif  // __R_THINGS__
